Sanitising Seawater at Subsea Locations
AssigneeSubsea 7 Norway AS
InventorsOlivier Benjamin Labulle, Hans Anton Kros, Christopher Stephen Mancini
Life of this patent
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Abstract
A method of sanitising seawater at a subsea location comprises: exposing flow of seawater in a treatment reactor to UV radiation that sanitises the seawater without the addition of sanitising chemicals; and outputting the sanitised seawater from the reactor into a subsea structure such as a pipeline or a wellhead. The flow of seawater may be exposed to successive emitters of UV radiation such as pressure-compensated LEDs. The efficacy of sanitisation may be determined by: injecting a tracer fluid into the flow of seawater upstream of the reactor; and, downstream of the reactor, sensing transformation of the tracer fluid due to exposure of the tracer fluid to the UV radiation in the reactor.
Claims26
A method of sanitising seawater at a subsea location, comprising:
- exposing a flow of seawater in a treatment reactor to UV radiation that sanitises the seawater;
- and
- outputting the sanitised seawater from the reactor into a subsea structure.
A device for sanitising seawater at a subsea location, comprising:
- a treatment reactor that contains at least one emitter of UV radiation for sanitising seawater flowing along a flow path extending through the reactor;
- and
- an outlet downstream of the reactor outputting the sanitised seawater from the reactor.
Dependencies are inferred from the claim text.